Abstract: A self propelled soil working machine includes a tool carrier which is actively adjustable to provide variable downward force on a soil working tool via a suspension element which is further passively responsive to accommodate motion of the tool in response to external force. The tool carrier is configured to adjust the working depth and pitch of the tool.

Abstract: A towable tool includes a frame extending over a width in an X-axis direction, a length in a Y-axis direction, and a height in a z-axis direction. A plurality of ground-contacting support wheels are rotatably coupled with the frame. A plurality of ground-working discs each rotatably coupled with a respective rigid shank. Each rigid shank is received and selectably retained in a respective receptacle of the frame.

Abstract: One exemplary embodiment is a hitch assembly including forward and rearward lateral members, first and second longitudinal members and a lifting member which are coupled together to form a laterally-articulating pitch-adjustable quadrilateral. The forward lateral member is coupled with the first longitudinal member by a first joint and the second longitudinal member by a second joint. The rearward lateral member is coupled with the first longitudinal member by a third joint and the second longitudinal member by a fourth joint. The lifting member is coupled with the rearward lateral member by a first flexible rigging member and a second flexible rigging member. The quadrilateral can articulate between a left-leaning configuration, a rectangular configuration, and a right-leaning configuration. The lifting member can be adjusted to vary an amount of slack in one or both of the flexible rigging members and to raise and lower the rearward lateral member.

Abstract: One embodiment includes a grading tool structured for attachment to a work machine. The grading tool includes a frame, ground contacting wheels coupled with the frame, a comb coupled with the frame and extending from a first end of the frame, and a coupling member coupled with the frame and structured to be accessible from a second end of the frame. When the ground contacting wheels are in contact with the ground a depth of penetration of the comb into the ground surface is adjustable by changing the pitch of the grading tool.

Abstract: A grading tool comprises a frame extending between a hitch and a ground contacting member. A first adjustment mechanism and a lever are coupled with the frame. A suspension assembly including a spring is coupled with the lever. A grading box assembly is coupled with the frame and with the suspension assembly. The spring is compressible to accommodate motion between the lever and the grading box assembly. A second adjustment mechanism is coupled with the frame and the grading box assembly and is adjustable to selectably increase and decrease in length. A fixation member is coupled with the grading box assembly and is selectably coupleable with the frame to fix a first side of the grading box assembly vertically relative to the frame while allowing vertical movement of a second side of the of the grading box assembly relative to the frame.

Abstract: Unique self-propelled soil working machines are disclosed. In certain exemplary embodiments the self propelled soil working machine includes a tool carrier which is actively adjustable to provide variable downward force on a soil working tool via a suspension element which is further passively responsive to accommodate motion of the tool in response to external force. In certain exemplary embodiments, the tool carrier is configured to adjust the working depth and pitch of the tool. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and figures.

Abstract: One embodiment includes a grading tool structured for attachment to a work machine. The grading tool includes a frame, ground contacting wheels coupled with the frame, a comb coupled with the frame and extending from a first end of the frame, and a coupling member coupled with the frame and structured to be accessible from a second end of the frame. When the ground contacting wheels are in contact with the ground a depth of penetration of the comb into the ground surface is adjustable by changing the pitch of the grading tool.